Watch band assembly



FIG. 1 is a top plan view of a watch band assembly showing my new design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a right side elevation view thereof;

FIG. 4 is a left side elevation view thereof;

FIG. 5 is a front elevation view, the opposite side being a mirror image of the shown; and,

FIG. 6 is an isometric view thereof.

The broken lines in FIGS. 1 and 6 of the drawings depict a watch dial as environmental subject matter only and form no part of the claimed design. 

CLAIM The ornamental design for a watch band assembly, as shown and described. 